That is true. However I think it is a bit of a paradox. It shows immediate opposition, but in the overall picture does no good. Most likely the tax money you would not pay, would result in reduced sociol services and not affect the munitions. The government would stop medical research before it stops buying munitions.

Also keep in mind that the taxes are used for all purposes the majority are for social services such as health care, education, welfare, and many other things. You have no way of knowing if your individual money will buy bullets or go for cancer research. Also remember while the immediate income tax is the most noticible, in most countries it is the smallest source of tax income. We end up paying much more in taxes in such things as the various sales taxes, plus when we buy an item in most case nearly half or more is taxes that the retailer, distributer, and manufactuerer have added into the price as overhead.

Now, it is true that refusal to pay the immediate income tax is the most noticible, it is the least effective. Stop and think if every person stopped and refused to pay the income tax, all that would happen is the government which simply do as it always does and increase debit spending, which is basicaly a loan our descendents will eventually pay.

I think the best protest is to continue to pay the taxes, but organize or join groups that protest the use of tax dollars for war materials. Let it be known that you oppose what is happening, but do it in a manner that can be effective, not one that will only make a short term noise and end up resulting in the cost being carried by future generations.